Changsha Shuguang Audio Ltd.

Changsha Shuguang Audio Ltd.

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Tel: +86-0731-89745701
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Shuguang 805(replacing 805A) new Hi-Fi tube

Shuguang 805(replacing 805A) new Hi-Fi tube
Product name:Shuguang 805(replacing 805A) new Hi-Fi tube
Item:SG-805
Price:$35.99
Details:
about this tube 
     The auction is for one tube.

805(FU-5)

Straight heating thorium-tungsten cathode tridoes 805, can amplify the power of B series, A-F and R-F, and can amplify the power of C series and R-F and high frequency surge.
805 is the same with GL-805, and can be exchanged each other.


filament heating
Uf …………………………10 V
If…………………………3.25 A

capacitance between poles
input capacitance……………………8.5 PF
output capacitance……………………10.5 PF
transroute capacitance……………………6.5 PF

limit rating
plate voltage……………………1500 V
plate dissipation power………………125 W
working frequency and plate voltage
when working frequency is higher than 30MC, the output power of plate voltage and anticathode will adjust low according to the below table:

frequency(MC)  plate voltage and anticathode input power
B grade electrode C grade telanticathode modulate telex
30     100%     100%
45     90%      82%
80     71%      55%


commend working state(reference value)
B series A-F power amplify(two tubes) limit value
Ua………………………1250 1500 1500 V
Ia(max.sig.per tube)……………210 mA
Pa(in)(max.sig.per tube) z……315 W
Pa (per tube) ………………………125 W
Ug……………………………………-16 V
üg(pk)…………………235 280 V
Ia(0)……………………148 84 mA
Ia(max.sig)……………500 600 mA
Pd…………………………6 7 W
RL(a-a)……………………6.7 8.2 kΩ
Pout(max.sig)…………300 370 W

 

 

B series R-F power amplify
(on carry wave condition, each tube's maximum modulate coefficient is 1.0)
limit value
Ua………………1250 1500 1500 V
Ug…………………………-10 V
Ia………………135 115 150 mA
Pa(in)……………………………………185 W
üg(pk)…………70 70 V
Ig………………15 15 mA
Pd………………11 7.5 W
Pout……………55 57.5 W

C series R-F power amplify and surge(anticathode modulate)
(on carry wave condition, each tube's maximum modulate coefficient is 1.0)
limit value
Ua………………1000 1250 1250 V
Ug………………-155 -160 -500 V
Ia………………160 160 175 mA
Ig………………60 60 70 mA
Pa(in)……………………………………220 W
Pa…………………………………………85 W
üg(pk)…………295 300 V
Pd………………16 16 W
Pout……………110 140 W

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